Rotary screen



A. 0. eoueu. V

ROTARY SCREEN.

APPLICATION FILED JULY 19. 1920.

- Patented Nov. 30, 1 920.

2. SHEETSSHEET l'-' A. C. GOUGH.

ROTARY SCREEN.

APPLICATION HLED JULY 19, 1920.

1,860,929. v I Patented Nov. 30,1920.

2 SHEETS-SHEET 2.

UNITED. STATES ACHILLES CALLOWAY GOUGI I, F POCATELLO, IDAHO.

PATENT OFFICE.

ROTARY SCREEN.

Application filed July 19, 1920.

To all'whomz'tma-g concern:

Be it known that I, AoHiLLEs C. ,GoUGH, citizen of the United States, residing'at Pocatello, in the county State of Idaho, have invented certain new and useful Improvements in Rotary Screens;

scribed in my and I do hereby declare the following to be a full, clear, and exact description of the invention, suchas will enable others skilled in the art to which it appe'rtains to make and use the same.

This invention relates to rotary or moving screeniseparators for. separating and eliminating dust and small particles from the air. An improved form of such a device is'de- United States, Patent, Number 1,311,811. The object of the present invention is to provide a simpler, lighter and more economical form-of structure for devices of this character.

throughout.

. specification as The invention consists of the novel construction, combinations and arrangementsof parts hereinafter more fully specified.

Two sheets of" drawings accompany this part thereof, in which like reference characters denote like parts Figure 1' is a rator,

Fig. 2 is a plan view of Fig. 1 with the top b ade in section. 4 Fig. 3 is a view of one form of the improved structure, I Fig. 4 is a plan and transverse sectional front elevation ofa sepaview of another form of the improved structure,

Fig. 5 is a plan and transverse sectional view of another form of the lmproyed struc' ture,

drawings, A represents L a fan provided with hollow blades B .com-

a hollow shaft D and municating with U or by any othersuitable driven by a pulley means.

As illustratcd'in Figs. 1 and 2, the fan blades are constructed of thin sheet metal and the back side. of eachblade is provided with a number of ranged'preferablyin staggered fashion. On

Specification of Letters Patent.

' one and the of Bannock and proportionately plan and transverse sectional F ig. 6 is a plan and transverse sectional' view of another form of the improved strucfrom said openings in planes su short radial slots ar.

Patented Nov. 30, 1920. Serial No. 397,345.

same side of each of these slots, the thin sheet metal is depressed, to provide a sloping wall inclined at an angle with the face of the blade. The form of these sloping lvalls may vary,-as illustrated in Figs. 3 and 1, being of semicircularform as at a in Fig. of wedge shape as at 7) in Fig. 4; or triangular as at c in Fig. 5. In Figs. 6 and 7, :1 further modification is shown in havin the metal on one side of h and on the other side depressed.

a secure the best results in the separation of the dust from the air it is desirable that the size of the openings be proportioned to the velocity of the air and the speed of particles. As it is furthermore desirable that the maximum amount of air be adm1tted,'it is desirable that the size of the slots be varied proportionately with their radial distance from the axis of the fan, as indicated in Fig. 1, so that those slots traveling faster, the inclined walls of which Wlll exert a proportionately greater repellant force on the larger, than those travelmg slowernearer the center. I

y In operation it will be noted that when a fan provided with the structure of any of the illustrations is rotated in the directions indicated by the arrows at, the air will be drawn in the direction'indicated by the arrows 7;, and any particles of dust or other 'foreign matter lmpingin on the sloping walls, a, b c, d d, e or 6 will be deflected and thrown out while the air will be drawn in through the slots m and so through the hollow shaft D. Obviously, this invention is equally applicable to other forms of duct-ion'member, a sheet metal wall in said rotary part having a plurality of openings, saidfwall being bulged adjacent said open 'ings to provide inclined planes extending stantially transverse the direction of rotation.

r 2. In a separator having a rotary air induction member, a sheet metal wall in said rotary part having a plurality of radiai openings, said wall being indented adjacent dust particles, can be made screen separators, r relying on the same or simllar principles of plan andtransverse sectional said opening to provide inclined planes extending therefrom in planes substantially transverse the direction of rotation.

3. In a separator having a rotary air induction member, a sheet metal wall'in said rotary part having a plurality of radial openings arranged in staggered relation, said wall being indented adjacent said openings to provide inclined planes extending therefrom in planes substantially transverse the direction of rotation.

4. In a separator the combination of a rota-ry air induction member, a sheet metal wall in said member having a plurality of short radial openings arranged in staggered relation, said wall being bulged outwardly on one side and inwardly on the other side of each of said openings to provide planes ad- 1aceut thereto and extending angularly with respect to said wall in a direction transverse the direction of rotation.

5. In a separator having a rotary air induction member and a plurality of openings with walls inclined from said-openings in planes substantially transverse the direction of rotation. said openings being spaced radially and of a size proportioned to their radial distance from the axis of rotation so that their speed of rotation will be directly proportional to their size.

In testimony whereof I afiix my signature.

AGHILLES CALLOIVAY GQUGH. 

